concrete Flashcards

1
Q

what are the basic properties of concrete?

A

fine or course grain, portland or pozzoland, and water

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2
Q

it is a regular concrete with a basic mix of cement, aggregates and water

A

normal strength concrete

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3
Q

what is the ratio in making a normal strength concrete

A

1:2:4

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4
Q

what are the commonly uses of normal strength concrete?

A

pavement, home construction, and buildings that don’t require max. tensile strength

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5
Q

it is the simplest form of concrete

A

plain concrete

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6
Q

this type of concrete has no reinforcement and has the same mix ratio with normal strength concrete

A

plain concrete

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7
Q

what are the common application of plain concrete?

A

pavements and walkways

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8
Q

it has lower density and high water content, and has lightweight aggregates

A

lightweight concrete

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9
Q

what are the common application of lightweight concrete?

A

walls, flooring and plastering

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10
Q

it is made at a manufacturing plant and mixed during travel

A

ready mix concrete

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11
Q

what are the common applications of ready mix concrete?

A

building and roads

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12
Q

it is made of lime and shale-based portland cement

A

polymer concrete

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13
Q

what are the common uses of polymer concrete?

A

swimming pools, sewer structure

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14
Q

recycled glass is added on aggregate

A

glass concrete

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15
Q

what are the common uses of glass concrete?

A

countertops, floors, tiles

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16
Q

it is made with reinforced bar to improve the tensile strength

A

reinforcement concrete

17
Q

what are the common uses of reinforced concrete?

A

beams, columns, suspended slabs, bridges

18
Q

it is more porous which causes water to pass through to groundwater

A

pervious concrete

19
Q

what are the common uses of pervious concrete?

A

walkways, ramps, pavers

20
Q

it has compressive stresses applied to it during production

A

prestressed concrete

21
Q

what are the common uses of prestressed concrete

A

bridges, beams, suspended slabs, roofs

22
Q

what are the two types of prestressed concrete?

A

pre tension and post tension

23
Q

it is molded and curve, and ready to use

A

pre-cast concrete

24
Q

what are the common uses of pre-cast concrete?

A

mass housing, high rise building

25
it contains microscopic air bubbles and relieve internal pressure
air entrained concrete
26
it has a comprehensive strength of 6000 lbs./ sq. in.
high strength concrete
27
it is the removal of excess water
vacuum flooring
28
it is most commonly used in roads and parking lot
asphalt concrete
29
it hardens at quicker pace in a span of 48 hours
rapid set concrete
30
it is use as a concrete repair and restoration
rapid set concrete
31
it is self-consolidating
self compacting concrete
32
how many days does the concrete cures?
7 days maximum